TWI525909B - Antenna - Google Patents

Description

antenna

The present invention relates to an antenna, and more particularly to an antenna having a plurality of operating frequency bands.

With the development of modern technology, antennas have become an indispensable part of our daily lives, often transmitting signals through antennas. In addition, antennas are becoming more widely used and more frequently used. The new patent of the Republic of China No. M558078 discloses an antenna comprising a signal feed point, a radiation portion, a ground feed point and a ground portion.

However, during use, the antenna can only work in one working frequency band, and the bandwidth is relatively narrow, and the amount of signals transmitted or received per unit time is small, which cannot meet the requirements of completing more data transmission in a short time. .

In view of this, it is necessary to provide an improved antenna.

The main object of the present invention is to provide an antenna that can operate in multiple operating frequency bands and has a relatively wide overall bandwidth.

In order to achieve the above object, the present invention adopts the following technical solution: an antenna working in multiple working frequency bands, including a signal feeding point, a radiator, a transmission line connecting the signal feeding point and the radiator, a grounding portion, and a ground feeding point. And connecting the grounding part and grounding feed a grounding signal line of the point, the radiator comprising a first radiating section and a second radiating section connected to the first radiating section and bent from an end of the first radiating section, the second radiating section extending in a direction and The first radiating section extends in opposite directions, and the second radiating section is spaced apart from the first radiating section by a slot, and the first radiating section and the second radiating section together form a first radiating section, and the first radiating section A slot between the second radiating section forms a second radiating portion.

As a further improvement of the present invention, the antenna is a dipole antenna, and the transmission line and the radiator are symmetrically disposed at both ends of the signal feeding point.

As a further improvement of the present invention, the second radiating section has a right-angled trapezoid, and a wider base of the second radiating section is connected to the first radiating section.

As a further improvement of the present invention, the right angle waist of the second radiating section is connected to the slot, and the slot is "L" shaped.

As a further improvement of the present invention, the right angle waist of the second radiating section is relatively narrower than the bottom side.

As a further improvement of the present invention, the transmission line extends along a connection direction perpendicular to the signal feed point and the ground feed point, and then extends vertically toward the ground feed point, and then vertically bends and extends. The direction in which the vertical bending extends again is the same as the direction extending in the direction of connection perpendicular to the signal feeding point and the ground feeding point.

As a further improvement of the present invention, the first radiating section extends vertically from the end of the transmission line, and the second radiating section is bent toward the signal feeding point and then extends in a direction opposite to the extending direction of the first radiating section. Bend and extend.

As a technical solution for further improvement of the present invention, the first radiator and the grounding portion In the lower frequency band, the second radiating portion operates in a higher frequency band.

As a further improvement of the present invention, the antenna is further provided with a film covering the radiator, the grounding portion, the transmission line and the grounding signal line.

As a further improvement of the present invention, the grounding portion extends from a terminal end of the grounding signal line in a direction away from the grounding feeding point, the grounding portion is trapezoidal at a right angle, and the short bottom edge of the grounding portion is grounded The signal line is connected.

Compared with the prior art, the antenna of the present invention has at least the following effects: in the working frequency band, electromagnetic waves of two bands can be radiated at the same time, the overall bandwidth is relatively wide, and more energy can be radiated per unit time to satisfy high-speed data transmission. Requirements.

100‧‧‧Antenna

11‧‧‧ Signal Feeding Point

12‧‧‧ transmission line

13‧‧‧First radiant section

14‧‧‧second radiant section

15‧‧‧ slot

134‧‧‧ radiator

21‧‧‧ Grounding feed point

22‧‧‧ Grounding signal line

23‧‧‧ Grounding Department

30‧‧‧ boards

The first figure is a perspective view of the antenna of the present invention, wherein the antenna is not covered with a film; the second figure is a perspective view of the antenna of the present invention; the third figure is an assembled view of the antenna and the signal line of the present invention; and the fourth figure is the antenna of the present invention. The voltage standing wave ratio diagram at work.

Referring to the first to fourth figures, a specific embodiment of the antenna 100 of the present invention will be described in detail below with reference to the accompanying drawings.

The antenna 100 of the present invention has a plurality of working frequency bands, and includes a signal feeding point 11, a radiator 134, a transmission line 12 connecting the signal feeding point 11 and the radiator 134, a grounding portion 23, a ground feeding point 21, and a connection ground. The portion 23 and the ground signal line 22 of the ground feed point 21. In this embodiment, the antenna is disposed on the circuit board 30, and the antenna 100 is further disposed on the radiator 134, the transmission line 12, the grounding portion 23, and the grounding signal line. Film on 22 (not labeled). The antenna 100 is a dipole antenna and is also an array antenna.

The transmission line 12 extends along a connection direction perpendicular to the signal feed point 11 and the ground feed point 21, and then extends vertically toward the ground feed point 21, then vertically bends and extends, and the vertical bend again The direction of extension is the same as the direction extending perpendicularly to the direction of connection between the signal feed point 11 and the ground feed point 21.

The radiator 134 includes a first radiating section 13 and a second radiating section 14 bent from the end of the first radiating section 13. The first radiating section 13 extends perpendicularly from the end of the transmission line 12, and the second radiating section 14 first extends toward the signal feeding point 11 and then extends in a direction opposite to the direction in which the first radiating section 13 extends, and the second A slot 15 is spaced between the radiant section 14 and the first radiant section 13. The second radiating section 14 extends in a direction opposite to the direction in which the first radiating section 13 extends, and the second radiating section 14 is spaced apart from the first radiating section 13 by a slot 15, the first radiating section 13 and the first radiating section The two radiating sections 14 collectively form a first radiating portion (not numbered), and the slot 15 between the first radiating section 13 and the second radiating section 14 forms a second radiating portion (not numbered). If so, the antenna 100 has a relatively wide operating frequency band and can transmit more signals per unit time. In this embodiment, the second radiating section 14 has a trapezoidal shape, and a wider base of the second radiating section 14 is connected to the first radiating section 13. The first radiating section 13 extends vertically upward from the end of the transmission line 12, the right angle waist of the second radiating section 14 is connected to the slot 15, and the right angle waist of the second radiating section 14 is narrower than the bottom side. The slot 15 has an "L" shape, so that the antenna 100 can obtain an optimal radiation effect.

In this embodiment, when the antenna 100 is in operation, the first radiating portion operates in a lower operating frequency band, and the second radiating portion operates in a higher operating frequency band. The working frequency band of the antenna is 3168MHz-3696MHz and 4224MHz-4752MHz two working frequencies segment.

The grounding signal line 22 extends from the ground feeding point 21 first along the direction in which the signal feeding point and the ground feeding point are connected away from the signal feeding point, and then extends in the opposite direction, and then extends vertically away from the ground feeding point 21 side. .

The grounding portion 23 has a trapezoidal shape and extends in a vertical direction as a whole. A narrower bottom edge of the grounding portion 23 is connected to the ground signal line 22.

The film is coated on the radiator 134, the grounding portion 23, the transmission line 12 and the grounding signal line 22. If the covered portion is better protected, the service life of the antenna is improved.

Since the antenna 100 in the embodiment is a dipole antenna, the signal feeding point 11 is symmetrically disposed with the same transmission line 12 and the radiator 134, and the ground feeding point 21 is symmetric on both sides. The same ground signal line 22 and the ground portion 23 are provided, and the array antenna is integrally formed.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application.

11‧‧‧ Signal Feeding Point

12‧‧‧ transmission line

13‧‧‧First radiant section

14‧‧‧second radiant section

15‧‧‧ slot

134‧‧‧ radiator

21‧‧‧ Grounding feed point

22‧‧‧ Grounding signal line

23‧‧‧ Grounding Department

30‧‧‧ boards

Claims (10)

An antenna working in a plurality of working frequency bands, including a signal feeding point, a radiator, a transmission line connecting the signal feeding point and the radiator, a grounding portion, a ground feeding point, and a grounding signal connecting the grounding portion and the grounding feeding point a radiation comprising a first radiant section and a second radiant section connected to the first radiant section and bent from an end of the first radiant section, the improvement being: the direction in which the second radiant section extends The first radiating section extends in opposite directions, and the second radiating section is spaced apart from the first radiating section by a slot, and the first radiating section and the second radiating section together form a first radiating section, and the first radiating section A slot between the second radiating section forms a second radiating portion. The antenna of claim 1, wherein the antenna is a dipole antenna, and the transmission line and the radiator are symmetrically disposed at both ends of the signal feeding point. The antenna of claim 1, wherein the second radiating section has a right-angled trapezoid, and a wider base of the second radiating section is connected to the first radiating section. The antenna of claim 3, wherein the right angle waist of the second radiating section is connected to the slot, and the slot is of an "L" shape. The antenna of claim 3, wherein the narrower bottom edge of the second radiating section is shorter than the right angle waist. The antenna of claim 1, wherein the transmission line extends in a direction perpendicular to a connection between the signal feed point and the ground feed point, and then extends vertically toward the ground feed point, and then vertically bends. Extending, and the direction in which the vertical bending extends again is the same as the direction extending in a direction perpendicular to a connection direction between the signal feeding point and the ground feeding point. The antenna of claim 4, wherein the first radiating section extends perpendicularly from the end of the transmission line, and the second radiating section is bent toward the signal feeding point and then extends along the first radiating section. The direction of the opposite direction is bent and extended. The antenna of claim 1, wherein the first radiator and the ground portion operate in a lower frequency band, and the second radiation portion operates in a higher frequency band. The antenna of claim 1 or 7 or 8, wherein the antenna is further provided with a film covering the radiator, the grounding portion, the transmission line, and the ground signal line. The antenna of claim 1, wherein the grounding portion extends from a distal end of the grounding signal line toward a direction away from the grounding feed point, the grounding portion is trapezoidal at a right angle, and the grounding portion is shorter. The bottom edge is connected to the ground signal line.